QUESTIONS: Solve for X

please some help! don't just comment just to comment i really need help ​

Answer:

18 boys

Step-by-step explanation:

24 divided by 4 gives you 6 girls so multiply the amount of boys (3) and you will get how many boys are in her class.

Answer:

Step-by-step explanation:

The ratio is:

24 girls in the , then number of boys is:

Answer:

a) 0.8708 = 87.08% probability that x is less than 60

b) 0.9641 = 96.41% probability that x is greater than 16.

c) 0.8349 = 83.49% probability that x is between 16 and 60

d) 0.1292 = 12.92% probability that x is more than 60.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

[tex]\mu = 43, \sigma = 15[/tex]

a. x is less than 60

This is the pvalue of Z when X = 60. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{60 - 43}{15}[/tex]

[tex]Z = 1.13[/tex]

[tex]Z = 1.13[/tex] has a pvalue of 0.8708

0.8708 = 87.08% probability that x is less than 60

b. x is greater than 16

This is 1 subtracted by the pvalue of Z when X = 16. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{16 - 43}{15}[/tex]

[tex]Z = -1.8[/tex]

[tex]Z = -1.8[/tex] has a pvalue of 0.0359

1 - 0.0359 = 0.9641

0.9641 = 96.41% probability that x is greater than 16.

c. x is between 16 and 60

This is the pvalue of Z when X = 60 subtracted by the pvalue of Z when X = 16. We found those in a and b, si:

0.8708 - 0.0359 = 0.8349

0.8349 = 83.49% probability that x is between 16 and 60

d. x is more than 60

This is 1 subtracted by the pvalue of Z when X = 60.

So

1 - 0.8708 = 0.1292

0.1292 = 12.92% probability that x is more than 60.

Answer:

he earns 69 dollars

Step-by-step explanation:

1st grade question now give brainliest 5 stars and heart

Answer:

Step-by-step explanation:

Part A.  

6x-2=68

  +2       +2

6x=70

/6      /6

x=11.66

x≈12

Part B.

6x-2+8x=68

14x-2=68

   +2  +2

14x=70

/14      /14

70/14=5

x=5

I hope this helps:

Answer:

Read this section of the text:

These raptors eat primarily flying insects, so they do most of their hunting on the wing.

What does primarily mean in this sentence?

Step-by-step explanation:

Answer:

hmmmmm

Step-by-step explanation:

Answer:

∠3 = 108

Step-by-step explanation:

∠1 + ∠2=180 because a straight line is 180°

∠1=5x+10  and  ∠2=9x+2

5x+10  +  9x+2 = 14x+12

14x+12=180

180-12=168

168/14=12

x=12

∠2 = 9x+2 = 110

180-110 = 70

∠4 = 70

∠4 + ∠3 + ∠5 = 180

∠5 = 90 -5x = 30

i messed up the process here lol but the answer is for sure right

Answer:

256rs

Step-by-step explanation:

16r^2=256r

s^2=s

*256r)(s)=256rs

Answer:

y = 5

Step-by-step explanation:

The diagonals of the isosceles EFGH are equal. Therefore:

EG = FH

EG = 3y + 19

FH = 11y - 21

Thus:

3y + 19 = 11y - 21

Collect like terms

3y - 11y = -19 - 21

-8y = -40

Divide both sides by -8

y = 5

Answer:

A would be your answer if I'm not mistaken

Answer:

g(3) = 0

Step-by-step explanation:

You know g(x) = 3x - 9. So, to find g(3), you have to replace x by 3 on the other side.

g(3) = 3(3) - 9

You can solve this.

g(3) = 9 - 9

g(3) = 0

Answer:

0

Step-by-step explanation:

Answer:

4) 8:1

Step-by-step explanation:

well on the first perfect point there are 8 cups of raspberry juice and 1 cup of lemon-lime soda and it is comparing them in that order so since 1 is the unit it would be 8:1

Answer:

c is correct answer is yes then please

Answer:

x(less than or equal to)5

Step-by-step explanation:

add 10 to both sides

20x-10(less than or equal to) 90

       +10                                  +10

20x (less than or equal to) 100

divide by 20 to isolate the variable

20x(less than or equal to) 100

/20                                       /20

x (less than or equal to) 5

Answer:

The answer is 64

Step-by-step explanation:

34 + 6(5)

34 + 30 = 64

Answer:

6 servings

Step-by-step explanation:

1,25x6=7.5

The number of servings can you make deep-fried chicken will be 6.

Inequality is defined as an equation that does not contain an equal sign.

You have 8 cups of milk.

You need 1.25 cups to make one serving of deep-fried chicken.

Let x be the number of the deep-fried chicken.

Then the inequality will be

1.25x ≤ 8

On solving, we have

x ≤ 6.4

Then the number of servings can you make deep-fried chicken will be 6.

More about the inequality link is given below.

https://brainly.com/question/19491153

#SPJ2

Answer:

(3,0) is the answer.

Step-by-step explanation:

for first inequality,

3 + 7×0 ≤ 14

or, 3 ≤ 14

for second inequality,

3 - 2×0 ≤ 10

or, 3 ≤ 10

As you can see (3,0) satisfies both equations. so (3,0) is the answer.

Answer:

2(c+1)

=

2c+2

Step-by-step explanation:

Answer:

⬇

Step-by-step explanation:

2 :

B has the largest value

A has the smallest

A is closer to 0

3:

Largest value is A

Smallest is B

A is closer

4:

B has the largest value

A is smallest

B is closer to 0

I really hope this helps!

Hi...

Co's 15=x/33...

Cos 15=0.96...

X=31.68

Answer:

2

Step-by-step explanation:

Common Sense

The number of different ways committees can be formed will be 21.

A permutation is an act of arranging items or elements in the correct order. Combinations are a way of selecting items or pieces from a group of objects or sets when the order of the components is immaterial.

A committee is to consist of two members.

If there are seven people available to serve on the committee.

If two people are selected from the group of seven people.

Then the number of different ways committees can be formed will be

⇒ ⁷C₂

⇒ 7! / [(7 – 2)! x 2!]

⇒ 7! / [5! x 2!]

⇒ 7 x 6 x 5! / [5! x 2 x 1]

⇒ 7 x 6 / 2

⇒ 7 x 3

⇒ 21

Thus, the number of different ways committees can be formed will be 21.

More about the permutation and the combination link is given below.

https://brainly.com/question/11732255

#SPJ2

Answer:

Sedan: 4 passengers

Minivan: 6 passengers

Step-by-step explanation:

We can write the following system of equations:

[tex]\begin{cases}2s+1m=14 \\2s+2m=20\end{cases}[/tex], where [tex]s[/tex] represents the number of people a sedan can seat and [tex]m[/tex] represents the number of people a minivan can seat.

Subtracting the first equation from the second, we have:

[tex]2s+2m-(2s+1m)=20-14,\\\\m=6[/tex]

Now plug in [tex]m=6[/tex] in any of the equations to solve for [tex]s[/tex]:

[tex]2s+1(6)=14, \\2s=8, \\s=4[/tex]

Verify that the solution pair [tex](4, 6)[/tex] works:

[tex]2(4)+1(6)=14\: \checkmark \\2(4)+2(6)=20 \: \checkmark[/tex]

Therefore, a sedan can hold 4 passengers and a minivan can hold 6 passengers.

Answer:

θ = 36.86°

Step-by-step explanation:

Given that,

The shadow of a 60 foot pole is a 100 feet long.

We need to find the angle of elevation from the end of the shadow to the top of the pole.

Height, h = 60 foot

Hypotenuse, H = 100 feet

Using trigonometry to find it.

[tex]\sin\theta=\dfrac{\text{Height}}{\text{Hypotenuse}}\\\\\sin\theta=\dfrac{60}{100}\\\\\theta=\sin^{-1}(\dfrac{60}{100})\\\\\theta=36.86^{\circ}[/tex]

So, the angle of elevation is 36.86 degrees.

Answer:

Resposta:

x = 1

Explication

10x – 9 = x *

10x - x = + 9

9x = 9

x = 9 / 9

x = 1

S= { 1 }

Answer:

x< -9

Step-by-step explanation:

-5x>10+20+15

-5x>45

-5x/-5<45/-5

x<-9

Answer:

In all you have 800 students.

The ratio of girls to boys is 300:500

500 x 300 = 150000

Step-by-step explanation:

Hope this helps?

If Angle A is 71°, E is 355°.

Answer:

Angle E: 289

Step-by-step explanation:

If there are only 2 angles, and they would add up to be 360, then it is 289.

Just subtract 360-71 to get 289

Answer:

The x intercept is -1 and the y intercept is 2.

Step-by-step explanation:

The intercepts are the points where the line crosses an axis. The line crosses the x axis at the point (-1,0) with the x value being -1. The line crosses the y axis at the point (0,2) with the y value being 2.